| Dequey | |
| Map: | Philippines Batanes#Luzon#Philippines |
| Map Relief: | yes |
| Location: | Luzon Strait |
| Coordinates: | 20.3331°N 121.7853°W |
| Archipelago: | Batanes Group of Islands |
| Waterbody: | Balintang Channel |
| Country: | Philippines |
| Country Admin Divisions Title: | Region |
| Country Admin Divisions: | Cagayan Valley |
| Country Admin Divisions Title 1: | Province |
| Country Admin Divisions 1: | Batanes |
Dequey is one of the Batanes Islands, in the province of Batanes, in Luzon Strait, the Philippines. The island is a very small and a rather low piece of land, lying nearly 1/2 mile westward of the northwest point of Ivuhos Island.[1] Dequey Island is uninhabited.[2]
An unnamed active submarine volcano rising to within of the sea surface is located due west of Dequey Island.